Selection of memory?

With a xeon motherboard 5520 & two E5520 xeon processors 2.66Ghz, which memory type perform best 1066Mhz or 1333Mhz, also unbuffered or registered?

Workstation used for rendering.
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More about selection memory
  1. Hi newcomer and welcome to the Tom's hardware forum.

    What specifications have the Xeon mobo and processors?
  2. Thanks for your help,

    Motherboard specs:

    Dual 1366-pin LGA Sockets
    Supports up to two Intel® 64-bit Xeon® processor(s) of the same type below:
    Quad-Core Intel®
    Xeon®Processor 5500 sequence (Nehalem-EP processor)

    12x 240-pin DIMM sockets
    Supports up to 96 GB 1333 / 1066 / 800MHz DDR3 ECC Registered memory
    Supports up to 24 GB 1333 / 1066 / 800MHz DDR3 ECC Unbuffered memory
    Memory Mirroring supported

    1333 / 1066 / 800MHz ECC Registered / ECC Unbuffered DDR3 SDRAM 72-bit, 240-pin gold-plated DIMMs

    CPU specs:

    E5520 8MB 2.26 GHz 5.86 GT/s DP 80W
  3. saint19 said:
    Hi newcomer and welcome to the Tom's hardware forum.

    What specifications have the Xeon mobo and processors?



    Thanks for your help,

    Motherboard specs:

    Dual 1366-pin LGA Sockets
    Supports up to two Intel® 64-bit Xeon® processor(s) of the same type below:
    Quad-Core Intel®
    Xeon®Processor 5500 sequence (Nehalem-EP processor)

    12x 240-pin DIMM sockets
    Supports up to 96 GB 1333 / 1066 / 800MHz DDR3 ECC Registered memory
    Supports up to 24 GB 1333 / 1066 / 800MHz DDR3 ECC Unbuffered memory
    Memory Mirroring supported

    1333 / 1066 / 800MHz ECC Registered / ECC Unbuffered DDR3 SDRAM 72-bit, 240-pin gold-plated DIMMs

    CPU specs:

    E5520 8MB 2.26 GHz 5.86 GT/s DP 80W
  4. Well.

    The registered memory is used for servers 'cause this memory type provides stability to all system, is more expensive too.

    The processor support 1066/800 memory types (See here), so, get the 1066 Unbuffered memory BUT make you sure that is CL7 ot CL8 or less, and 1.8V max.
  5. saint19 said:
    Well.

    The registered memory is used for servers 'cause this memory type provides stability to all system, is more expensive too.

    The processor support 1066/800 memory types (See here), so, get the 1066 Unbuffered memory BUT make you sure that is CL7 ot CL8 or less, and 1.8V max.



    What is CL7 & CL8?
  6. hayscib said:
    What is CL7 & CL8?


    Means Cas Latency. Read this
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